refer

1D

2A

3D

4B

5A

6A

7B

8D

9C

10D

1D

2A

3D

4B

5A

6A

7B

1D

2A

3D

4B

5A

6A

7B

8D

9C

10D

Choose the best answer for each of the following sentences.
1. In my experiments, the liquid is cooled to 32oF. It always freezes.
A. If you cool the liquid to 32 degrees, it froze.
B. If you cooled the liquid to 32 degrees, it would freeze.
C. If you cool the liquid to 32 degrees, it will freeze.
D. If you had cooled the liquid to 32 degrees, it would have frozen.

2. It may rain this afternoon. I hope it doesn't because I don't want the match to be cancelled.
A. If it rains, the match is cancelled.
B. If it rains, the match will be cancelled.
C. If it rained, the match would be cancelled.
D. If it had rained, the match would have been cancelled.

3. Unfortunately, I don't know Philosophy, so I can't answer your question.
A. If I know Philosophy, I can answer your question.
B. If I know Philosophy, I will be able to answer your question.
C. If I knew Philosophy, I would be able to answer your question.
D. If I had known Philosophy, I would have been able to answer your question.

4. ______ there are some more ideas, we can end the meeting now.
A. If
B. As if
C. Unless
D. In case

5. If he ______ with us now, he _____ the beauty of nature of the National Park.
A. is / can enjoy
B. was / will enjoy
C. has been / would enjoy
D. were / could enjoy

6. If they had searched more carefully, they _____ the watch sooner.
A. will find
B. would find
C. found
D. would have found

7. If I had got up early, I _______ to have breakfast now.
A. have
B. had
C. would have
D. would have had

8. I cannot buy a new computer ____ I save enough money.
A. if
B. even if
C. unless
D. as if

9. Most people you meet will be polite to you ______ .
A. if you are polite to them
B. if you will be polite to them
C. unless you are polite to them
D. if you were polite to them

10. If you do so, it _____ the matter worse.
A. makes only
B. would only make
C. will only make
D. had only made

11. You ______ English fluently unless you practice it every day.
A. will speak
B. will not speak
C. can speak
D. did not speak

12. Hurry up ______ you will miss the bus and be late for school.
A. if
B. and
C. or
D. as

13. You will get a good seat if you ______ first.
A. come
B. came
C. have come
D. will come

14. Sam will not graduate _______ .
A. if he passed all the tests
B. if he does not pass all the tests
C. unless he passes all the tests
D. unless he had passed all the tests

Exercise 6 : Choose the best answer for each of the following sentences. 1._____have enough apples, she’ll make an apple pie this afternoon. A.Should she B. If she C. Will she D. Unless she 2.If you_____to me, you wouldn’t have got so much trouble. A. listened B. would listen C. had listened D. Would have listened 3.If you don’t know how to spell a word, you_____ look it up in the dictionary. A. must B. will C. should D. ought 4.If the sun _____, we _____for a walk. A. shines / will go B. shone / will go C. shone / would go D. had shone / would go 5.The campfire _____ if it _____ last night. A. wouldn’t be cancelled / hadn’t rained B. wouldn’t have been cancelled / hadn’t rained C. would have been cancelled / hadn’t rained D. will be cancelled / rains 6.But for our parents, we _____ successful in life. A. will never be B. would never be C. wouldn’t have be D. would have never been 7.If I _____ my wallet at home this morning, I _____ money for lunch now. A. leave / will have B. didn’t leave / would have C. hadn’t left / would have D. hadn’t left / would have had 8.It is too bad, Lam isn’t here. If he _____ here, he _____ what to do. A. were / would know B. is / will know C. had been / would have known D. was / would know 9.If we _____ the plans carefully, we would not have had so many serious mistakes. A. study B. had studied C. studied D. were studying 10.I will never talk to you again _____ you apologize me _____ your being rude. A. if / for B. unless / for C. or / of D. whether / or 11._____if you work harder, you will be sacked. A. Whether B. If C. However D. Unless 12.I think you should stop smoking. A. If I am you, I will stop smoking. B. If I were you, I will stop smoking. C. If I were you, I would stop smoking. D. If I had been you, I would stop smoking. 13.If you take the ice out of the fridge, it _____. A. vaporizes B. melts C. heats D. disappears 14.We should do something to protect water from being polluted _____we will have nothing to drink in the future. A. if B. whether C. or D. unless 15.Let’s knock on their door to see _____home. A. if they’re B. unless they’re C. whether they were D. if they were 16.Unless we _____more snow, we can’t go skiing. A. will have B. have C. have had D. had 17.You’ll fail the exam _____ you start revising. A. if B. until C. when D. unless 18.Unless you wash the car, you _____not drive it at the weekend. A. would B. could C. have to D. may 19.If Peter _____his car before the drive, he _____the problem of out of petrol. A. checked / will not get B. had checked / would not have got C. checks / will not have got D. would be checking / will not have got 20.He stepped on the mine, and it exploded. A.If he doesn’t step on the mine, it doesn’t explode. B.If he doesn’t step on the mine, it won’t explode. C.If he didn’t step on the mine, it wouldn’t explode. D.If he hadn’t stepped on the mine, it wouldn’t have exploded. 21. In my experiments, the liquid is cooled to 32ºF. It always freezes. A.If you cool the liquid to 32 degrees, it froze. B.If you cooled the liquid to 32 degrees, it would freeze. C.If you cool the liquid to 32 degrees, it will freeze. D.If you had cooled the liquid to 32 degrees, it would have frozen. 22.It may rain this afternoon. I hope it doesn’t because I don’t want the match to be cancelled. A. If it rains, the match is cancelled. B. If it rains, the match will be cancelled. C. if it rained, the match would be cancelled D. If it had rained, the match would have been cancelled. 23.Unfortunately, I don’t know Philosophy, so I can’t answer your question. A.If I know Philosophy, I can answer your question. B.If I know Philosophy, I will be able to answer your question. C.If I knew Philosophy, I would be able to answer your question. D.If I had known Philosophy, I would have been able to answer your question. 24._____ there are some more ideas, we can end the meeting now. A. If B. As if C. Unless D. In case 25.If he _____with us now, he _____ the beauty of nature of the National Park. A. is / can enjoy B. was / will enjoy C. has been / would enjoy D. were / could enjoy 26.If they had searched more carefully, they...the watch sooner. A. will find B. would find C. found D. would have found 27.If I had got up early, I _____ to have breakfast now. A. have B.I had C. would have D. would have had 28.I cannot buy a new computer _____ I save enough money. A. if B. even if C. unless D. as if 29.Most people you meet will be polite to you _____. A. if you are polite to them B. if you will be polite to them C. unless you are polite to them D. if you were polite to them 30.If you do so, it _____ the matter worse. A. makes only B. would only make C. will only make D. had only made 31.You _____ English fluently unless you practice it every day. A. will speak B. will not speak C. can speak D. did not speak 32.Hurry up _____ you will miss the bus and be late for school. A. if B. and C. or D. as 33.You will get a good seat if you _____ first. A. come B. came C. have come D. will come 34.Sam will not graduate_____. A. if he passed all the tests B. if he does not pass all the tests. C. unless he passes all the tests D. unless he had passed all the tests. 35.If I had time, I would go with you. A.I am free and surely go with you. B.I am too busy to go with you. C. I will go with you because I have time. D. I am free enough to go with you. 36.If Margaret hadn’t been wearing a seat belt, she.... Injured. A. has been B. would has been C. would be D. would have been 37.If I _____ the rain yesterday, I_____ ill. A. had not caught / would have been B. had not caught / would have not been C. have not caught / were not D. have not caught / would have been 38.He looked frightened as if he _____ a ghost. A. sees B. is seeing C. has seen D. had seen 39.What _____if there _____ a serious nuclear accident. A. will happen / was B. happens / were C. would happen / were D. would happen / had been

Lần sau bn vt thì cách ra cho dễ nhìn nhé~~~~

Choose the best answer for each of the following sentences. 1._____have enough apples, she’ll make an apple pie this afternoon. A.Should she B. If she C. Will she D. Unless she

2.If you_____to me, you wouldn’t have got so much trouble.

A. listened B. would listen C. had listened D. Would have listened

3.If you don’t know how to spell a word, you_____ look it up in the dictionary.

A. must B. will C. should D. ought

4.If the sun _____, we _____for a walk.

A. shines / will go B. shone / will go C. shone / would go D. had shone / would go

5.The campfire _____ if it _____ last night.

A. wouldn’t be cancelled / hadn’t rained B. wouldn’t have been cancelled / hadn’t rained C. would have been cancelled / hadn’t rained D. will be cancelled / rains

6.But for our parents, we _____ successful in life.

A. will never be B. would never be C. wouldn’t have be D. would have never been

7.If I _____ my wallet at home this morning, I _____ money for lunch now.

A. leave / will have B. didn’t leave / would have C. hadn’t left / would have D. hadn’t left / would have had

8.It is too bad, Lam isn’t here. If he _____ here, he _____ what to do.

A. were / would know B. is / will know C. had been / would have known D. was / would know

9.If we _____ the plans carefully, we would not have had so many serious mistakes.

A. study B. had studied C. studied D. were studying

10.I will never talk to you again _____ you apologize me _____ your being rude.

A. if / for B. unless / for C. or / of D. whether / or

1 A

2 B

3 D

4 A

5 B

6 B

7 A

8 C

9 C

10 B

1. If I ___________ you, I wouldn’t buy that coat.

            A. am                           B. was                          C. were                        D. would be

2. If I didn’t want to go to the party, I ___________ go.

            A. don’t                        B. didn’t                       C. won’t                       D. wouldn’t

3. They are interested in wildlife conservation.

            A. protection                B. migration                 C. entrapment               D. gestation

4. He drove so fast that I really felt my life was  in danger.

            A. at the target              B. in accident               C. at stake                    D. in comfort.

5. She overcame injury to win the Olympic gold medal.

            A. revealed                  B. dealt                        C. defeated                   D. succeeded

6. There wasn’t enough coal during the war, so we had to use it sparingly.

            A. continently              B. economically           C. orally                       D. visually

7. People are fed up with all these traffic jams.

            A. got up                      B. fond                        C. tired                         D. bored

8. She’s been banned from leaving Greece while the allegations are investigated.

            A. forbade                    B. permitted                 C. allowed                    D. refused

9. Humans, dogs elephants and dolphins are all ___________, but birds, fishes, and crocodiles are not.

            A. single cell                B. sea animals              C. mammals.                D. krill

10. Tropical rain forests used to cover 10% of the earth ___________.

            A. surface                    B. seabed                     C. undersea                  D. floor.

11. Many species of animals and plants today are ___________.

            A. endangered              B. in risk                      C.  danger                    D. under danger.

12. A tropical rain forest, once destryed can never be ___________.

            A. recovered                B. replaced                   C. repaired                   D. regenerated.

13. He was wearing a heavy raincoat to ___________ himself.

            A. conceal                    B. protect                     C. cover                       D. wrap

14. You ___________ to go to bed late.

            A. shouldn’t                 B. oughtn’t                   C. mustn’t                    D. can’t

15. The UK is devided ___________ four parts : England, Scotland, Wales, and Nortern Ireland.

            A. between                   B. among                     C. into                          D. for

1. If I ___________ you, I wouldn’t buy that coat.

            A. am                           B. was                          C. were                        D. would be

2. If I didn’t want to go to the party, I ___________ go.

            A. don’t                        B. didn’t                       C. won’t                       D. wouldn’t

3. They are interested in wildlife conservation.

            A. protection                B. migration                 C. entrapment               D. gestation

4. He drove so fast that I really felt my life was in danger.

            A. at the target              B. in accident               C. at stake                    D. in comfort.

5. She overcame injury to win the Olympic gold medal.

            A. revealed                  B. dealt                        C. defeated                   D. succeeded

6. There wasn’t enough coal during the war, so we had to use it sparingly.

            A. continently              B. economically           C. orally                       D. visually

7. People are fed up with all these traffic jams.

            A. got up                      B. fond                        C. tired                         D. bored

8. She’s been banned from leaving Greece while the allegations are investigated.

            A. forbade                    B. permitted                 C. allowed                    D. refused

9. Humans, dogs elephants and dolphins are all ___________, but birds, fishes, and crocodiles are not.

            A. single cell                B. sea animals              C. mammals.                D. krill

10. Tropical rain forests used to cover 10% of the earth ___________.

            A. surface                    B. seabed                     C. undersea                  D. floor.

11. Many species of animals and plants today are ___________.

            A. endangered              B. in risk                      C.  danger                    D. under danger.

12. A tropical rain forest, once destryed can never be ___________.

            A. recovered                B. replaced                   C. repaired                   D. regenerated.

13. He was wearing a heavy raincoat to ___________ himself.

            A. conceal                    B. protect                     C. cover                       D. wrap

14. You ___________ to go to bed late.

            A. shouldn’t                 B. oughtn’t                   C. mustn’t                    D. can’t

15. The UK is devided ___________ four parts : England, Scotland, Wales, and Nortern Ireland.

            A. between                   B. among                     C. into                          D. for

1 If she............here now,she could give us some advices

a,is b,was c,were d,has been

2, I .........not loose my way if i .......you

a,would/was b,would / were c,will/am d,will/was

3,............I came,she was learning

a,when b,if c,because d,as soon as

4, I..............not be late for class if I ............you

a,would/was b,would/were c,will/am d,will/was

5, If I were you, I would .............her

a,marry b,to marry c,married d,marrying

6, You................the exam unless you study hard

a,will fail b,would fail c,will pass d,would pass

7, If it.................I shall take an umnrella with me

a,rain b,rains c,to rain d,rained

8, I...................be able to give you the answer if you asked me tomorrow

a,would b,will c,should d,might

9, If i.......................the teacher, I would give an aesier test

a,was b,were c,is d,am

10, If i were you, I................visit them without an invitation

a,won't b,hadn't c,don't d,wouldn't

11, If you want.................there before dark, you should start at one

a,get b,to get c,getting d,got

12, Ask him..........in, don't keep him standing at the door

a,come b,came c,to come d,coming

13, I don't know him but he looks as if he....................be his father

a,can b,could c,would d,should

14, If it....................fine, I shall go out

a,was b,will be c,is d,were

15, If you look hard enough, you....................it

a,will find b,will be finding c,are finding d,found

1. If she_____here now,she could give us some advices

a.is

b.was

c.were

d.has been

2. I_____not loose my way if I _____you

a.would/was

b.would/were

c.will/am

d.will/was

3._____I came,she was learning

a.when

b.if

c.because

d.as soon as

4. I_____not be late for class if I_____you

a.would/was

b.would/were

c.will/am

d.will/was

5. If I were you, I would_____her

a.marry

b.to marry

c.married

d.marrying

6. You_____the exam unless you study hard

a.will fail

b.would fail

c.will pass

d.would pass

7. If it_____I shall take an umnrella with me

a.rain

b.rains

c.to rain

d.rained

8. I_____be able to give you the answer if you asked me tomorrow

a.would

b.will

c.should

d.might

9. If I_____the teacher, I would give an aesier test

a.was

b.were

c.is

d.am

10. If i were you, I_____visit them without an invitation

a.won't

b.hadn't

c.don't

d.wouldn't

11. If you want_____there before dark, you should start at one

a.get

b.to get

c.getting

d.got

12. Ask him_____in, don't keep him standing at the door

a.come

b.came

c.to come

d.coming

13. I don't know him but he looks as if he_____be his father

a.can

b.could

c.would

d.should

14. If it_____fine, I shall go out

a.was

b.will be

c.is

d.were

15, If you look hard enough, you_____it

a.will find

b.will be finding

c.are finding

d.found

1 if i ............ the bus this afternoon , i will get a taxi instead

a miss b will miss c missed d had missed

2 we will have to go without john if he .............. soon

a will not arrive b will arrive c arrives d does not arrive

3 if i make some coffee , ................ the cake ?

a do you cut b will you cut c are you cutting d do not you cut

4 if you ............... your homework , i ...................... you watch tv

a will not do / let b will press/comes c press / can come d have pressed / will comes

5 ............... you , i would think twice about that decision . it could be a bad move

a if i am b should i be c were i d if i had been

6 would you like some cake ? - no thanks . if i ................ cake , i ...........fat .

a ate/will get b ate / would get c would eat / could get d am eating/will get

8 pam broke her arm in the accident . it ................. much worse if she had not been wearing her seat belt

a will be b would have been c was d were

9 my boss made me work overtime again . - if i ............ you , i ................ my job

a were / would have quit b am/ will quit c was/must quit d were / would quit

10 john went to the hospital alone - did he ? if he ............. me,i ... with him

a told/ would go b told / might have gone c had told / could go d had told/would have gone

Choose the best answer for each of the following sentences
1. If I had time, I would go with you.
A. I am free and surely go with you.
B. I am too busy to go with you.
C. I will go with you because I have time.
D. I am free enough to go with you.

2. If Margaret hadn't been wearing a seat belt, she ____ Injured.
A. has been
B. would has been
C. would be
D. would have been

3. If I ____ the rain yesterday, I ______ ill.
A. had not caught / would have been
B. had not caught / would not have been
C. have not caught / were not
D. have not caught / would have been

4. He looked frightened as if he _____ a ghost.
A. sees
B. is seeing
C. has seen
D. had seen

5. What _____ if there _____ a serious nuclear accident.
A. will happen / was
B. happens / were
C. would happen / were
D. would happen / had been